Truck for railroad rolling stock



March 4 1924. 1,485,982 R. F. HALL TRUCK FOR RAILROAD ROLLING STOCK' Filed Nov. 29. 1922 2gheets-sheet 1 [36.33. FIG-3 March 4 1924. 1,485,982

R. F. HALL TRUCK FOR RAILROAD ROLLING STOCK Fil d NOV, 29' 1922 2 Sheets-Sheet 2 Fig.

Patented Mar. 4, 1924.

UNITED STATES aommmr. HALL, or scammc'mnr, NEW roan.

T BUCK FOR RAILROAD ROLLING STOCK.

' Application med Hovember 2a, 1922. Serial m. 003,917.

To all whom. it my concern:

Be it known that I, Roaaa'r F. HALL, a citizen of the United States, residing at Schenectady, in the county of Schenectady and State of New York, have invented a certain new and; useful Improvement in Trucks for Railroad Rolling Stock, of which improvement the following is a. specification. I

My invention relates to trucks for railroad rolling stock, 'of the class or type in which lateral resistance devices, of the rocker type, are provided, and is an improvement on that set forth -i'rl Letters Patent of the United States N 0. 1,060,222, granted and is sued to W. E. Woodard, under date of April 29, 1913.

The object of my invention is to provide means for ensuring the coincident movement of the laterally movin bolster, during the lateral displacemento the bolster from its normal central position, thereby preventin the relative slipping of said members, whic is an objection that is encountered in practice.

The im rovement claimed is hereinafter fully set 'orth. V

In the accompanying drawings: Figure 1 is a view, half in elevation and half in vertical central transverse section, of a two wheeled locomotive leading truck, embodying my invention, the holster and rockers being shown in the normal central position which they assume when the locomotive is on a tangent track; Fig 2, a. similar view, showing the bolster and rockers displaced laterally when the locomotive is on a curved track; Fig. 3, a view, in elevation, of a doublerocker memfiber; Fi 3, a transverse section throu h the same; ig. 4, a view, in elevation, an on an enlarged scale, of a rocker and the adjoining portion of a bolster, when in the position shown in Fig. 1; 5, a similar view of said members, when in the position shown in Fig. 2; and, Fig. 6, a view, showing difi'erent'positions of the pin ill the bolster slot.

y invention is herein exemplified as applied in a two wheeled locomotive leading truck of the swing or lateral motion type, in which, as in present practice, a frame, 1, is supported, through the inbermediation of springs, 11, on the journalboxes, 4, of an axle, 5,1on whichthe truck wheels, 5', are secured. A bolster support, 6, extends from one to the other of the side members of the lower portion of the truck frame, to which it is rigidly secured at its ends. The weight carried by the truck is primarily applied thereto through a floating or swing holster, 7, which is provided with a centre plate, *5, perforated for the, passe c of a centre pin. The holster is supports with the capacity of relative lateral movement, relativclyto the truck frame, on the double carved u per bearing faces of counterpart cam roc era, 9, upon each of which it abuts by double upwardlyinclined or V shaped bearings, 7", formed on its lower side. bearings are, as in ordinary practice, disposed or opposite sides of the vertical ion i tudinal and transverse central planes of t 0 track and the rockers, 9", or the pairs on each side of the longitudinal central plane may be connected by being made integral with a body, 9, on which is formed an upwardly extending lug, 9, as shown in Figs. 3 and 3". The cam rockers are adapted to swing, in one or the other direction, about the axes of segmental journals, 9?, extending, parallel with the longitudinal central plane ofthe truck, 'on opposite sides of their bases, and fitting in correspondingly recessed bearings in the bolster support, 6.

In the practice of my invention, 1 provide means whereh each of the cam rockers, 9, is coupled to t e bolster, 7 thus incident movement of said members, in their lateral displace ent, said means being so constructed as to approximately compensate for the difference between the movement of the bolster in a right line, and that of the rocker in a circular are. To this end, a horizontally extending pin, 9, which is fixed, directly or intermediately, to, and therefore parta-kes of the movement of each rocker, is fitted to engage a. slot, 7, in the bolster, above said pin.

substantially triangular form, as clearly shown in Figs. 4, 5 and 6, being narrower at its upper end, and wider at its bottom,-'rhereby providing for the rectilineal and the curvilinear movements, respectively, of the bolster and the rockers, while maintaining the continuous connection of said members, during such move ments.

When the two rockers of each pair are connected by an interposed integral body, as shown in Figs. 3 and 3*, the pin, 9, 18 preferably secured in an upstanding lug, 9", on the body, in line axially with the mid- The slot, 7, is of The cam rockers and bolsterensuring cowithout variation f rpm their operative relation or from the spirit of my invention; the pin may b loeatetl on the holster and the slot on the rocker, and also that while the invention is more particularly desirable in connection with separate IOGRGI'S, it IS equally a plicahle when two rockers of a pair are ormed in an integral casting.

I claim as my invention and desire to secure by Letters Patent:

1. In a railroad track, the combination of a, frame; a holster, adapted to traverse latorally relatively thereto; a swinging cam rocker, journallecl in hearings on the frame, extending transversely to the bolster; and

means for positively coupling the bolster and the rocker, comprising a pin, fixed in one of said members, and a slot, of varying Width, formeil' on the other, in which slot said )in engages.

2'. n a railroad track, the cm'nbination of a frame; a bolster, adapted to traverse laterally relatively thereto; a swinging cam rocker, journalleil in hearings in the frame, extending; transversely to the holster; and means for positively roupling the bolster and the rocker, comprising a pin, fixed on one of said members, and a slot, of substantially triangular shape, formed on the other, in which slot said pin engages.

1-3. In a lateral motion railroad truck, a

holster, having double inclined or V-shaped hearings on opposite sides of its base, and slots, of substantially triangular form, below saiil hearings.

ROBERT F. HALL.

Witnesses J. Howano VAGAR, M. N. Uomzn. 

